Travel backpack



FIG. 1 is a front, top perspective view of a travel backpack, showing my new design;

FIG. 2 is a rear, bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is another perspective view thereof, shown in an alternative position.

The broken lines in the figures illustrate portions of the travel backpack that form no part of the claimed design. 

CLAIM The ornamental design for a travel backpack, as shown and described. 